add $measureresponsecode for curl plugin

[azhurbilo]

according this documentation page https://collectd.org/documentation/manpages/collectd.conf.5.shtml#plugin_curl

we can start collecting response code

[azhurbilo]

Yep, I also saw this failed check before starting add any changes, so it's not related to my MR )

Warning: Dependency puppetlabs/stdlib has an open ended dependency version requirement >= 4.6.0
Warning: Dependency puppetlabs/concat has an open ended dependency version requirement >= 1.2.5
Warning: Dependency stahnma-epel has an open ended dependency version requirement >= 1.2.2
Warning: Dependency puppetlabs-apt has an open ended dependency version requirement >= 2.2.0
manifests/init.pp:52:arrow_on_right_operand_line:WARNING:arrow should be on the right operand's line
manifests/init.pp:55:arrow_on_right_operand_line:WARNING:arrow should be on the right operand's line
manifests/init.pp:56:arrow_on_right_operand_line:WARNING:arrow should be on the right operand's line
manifests/init.pp:57:arrow_on_right_operand_line:WARNING:arrow should be on the right operand's line

[bastelfreak]

The 4 warnings about dependencies can be ignoried. We always test against master branch, not releases, to catch errors before they are released.

The other warnings are caused by a lately updated puppet-lint plugin. Are you able to fix them? Otherwise we can do it in a separate pull request.

[oranenj]

Looks good to me. Thanks :)